In 2015, Viking introduced its first ocean ship with the christening of the 930-guest all-veranda Viking Star. One year later, Viking launched its second ocean ship, Viking Sea, which was joined by sister ships Viking Sky and Viking Sun in 2017 and by Viking Orion in 2018. The fleet welcomes Viking Jupiter in 2019. Four more yet-to-be-named ships are scheduled to launch by 2023.